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RVFM Guinea & Feather Apparatus

Guinea-and-Feather-Apparatus-RVFM-52-2679-P-This-apparatus-can-be-used-to-demonstrate-that-in-a-vacuum-bodies-of-different-density-or-mass-fall-at-the-same-speed-It-consists-of-an-acrylic-tube-fitted-with-bungs-at-one-end-P-P-A-valve-with-stopcock-at-one-end-allows-a-vacuum-pump-to-be-attached-and-the-air-evacuated-from-the-tube-Inside-the-tube-is-a-coin-and-a-piece-of-paper-When-air-is-in-the-tube-the-coin-falls-quickly-but-the-paper-is-subject-to-air-resistance-and-falls-more-slow

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